Printing-press.



Patented Nov. 2|, I899.

E. HETT.

. PRINTING PnEss.

(Applicatidn filed Mar. 6, 1899.)

6 Sheets$heet I.

(No Model.)

WITNESSES: 3; 1 JMHM No. 637,602. I Paten ted Nov. 2|, I899. E. HETT.

PRINTING PRESS.

(Application filed Mar. 6, 1899.

(N M 6 Sheets-Sheet 2.

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WITNESSES:

ATTORNEYS (No'ModeL) E. HETT.-

Pate n ted Nov. 2|; I899.

PRINTING PRESS.

(Application filed 1hr. 6, 1899.)

42/ MIN m 6 Sheets-Sheot 3.

m: "cams prrgns co. PHOTO-Limb ASH GTO D. c.

No. 637,602. Patented Nov 2|, I899.

. E. HETT.

PRINTING PRESS.

, (Appliqation filed Mar. 6, 1899.-) v (No Modal.) 6Sheets- Sheet 4.

WITNESSES: I Y INVENTOR QWMM-J" ww w ATTORNEYS YHi nonma PcYcns co.momuwov. wnsmutrmn, n. c.

Patented Nov. 2|, I899.

6 Sheets-Shet 5.

E. HETT.

PRINTING PRESS.

(Application filed Mai. 6, 1899.)

(No Model.)

' INVENTOR mm. M

'ATTORNEY5 Ill:

' i l l llllllill lllillllllllllllllllh No. 637,602. Patefited Nov, 2|,I899.

E. HETT.

PRINTING PRESS.

' (Application glad Mar. 6,.1899.)

(No Model.)

ATTORNEY 5 n1: pawns PETERS cor, wwmnna. wusnmcron. o c.

EDWARD HETT, OF NEW YORK, N. Y.

PRINTING-PRESS.

SPECIFICATION forming part bf. Letters Patent No. 637,602, datedNovember 21, 1899; 7 Application filed March 6, 1899. Serial. No-,707,921. (No model.)

To all whom it may concern:

Be it known that I, EDWARD HETT, of New York, (New Dorp,) in the countyof Richmond and State of New York, have invented a new and usefulImprovementin Printing-Presses, of which the following is aspecification.

My invention relates to presses, and particularly to lithographicpresses. Its object is to construct a press that in one continuousoperation will print lit-hographically in one or more colors and alsoprint typographically advertising or other matter upon a continuous web;also, to provide improved means in presses where a printing-cylinder orprintingcylinders are used for moving such cylinder or cylindersradially outward from or inward toward the press and also improved meansfor removing them from the press or placing them in position in it,particularly in presses where there are a plurality ofprinting-cylinders; also, to provide improved means for moving theprinting-cylinder and impressioncylinder of a press toward or away fromeach other, and for thus properly timing the printing and regulating thepressure between the cylinders,and also to provide improved means forspreading or distributing theink upon the surface of theink-distributing roller.

1 have shown in the drawings, in which similar reference characters inthe different figures refer to corresponding parts, and will now proceedto describe the preferred form of my improved devices.

Figure 1 is a side elevation of a press embodying my invention. Fig. 2is a vertical longitudinal section, taken on the lines 2 2 in Fig. 3,looking in the direction of the arrow; and Fig. 3 is a verticalcross-section, taken on the line 3 3 in Fig. 1, looking in the directionof the arrow. Fig. 4 is a side elevation of one form of standard forholding printing-cylinders preparatory to their introduction into thepress or their removal therefrom. Fig. 5

is a side elevation of another form of standard arranged, as shown, foruse in a press having six printing-cylinders. Fig. 6 is an end view ofthe same, showing a printing tube in position upon one of thereceivingarms. Fig. 7 is a vertical cross-section of the same. Fig. 8 isa detail of one of the swinging heads, and Figs. 9 and 10 are horizontallithographic press in which the impressioncylinder is a large drum andthe printingsurfaces are hollow cylindrical printing-t ubes mounted uponmore substantial but hollow form-cylinders,the latter being mounted uponpermanent shafts of the press and arranged around the periphery of thedrum, although my improved devices may be used with other kinds ofpresses.

1 represents the framework of the press, 2 the drum, and 3 the web. Theweb passes from roll 4 around rollers 5 5, thence around the peripheryof the drum, and thence between delivery-tapes 7 and 8, the formermounted on rollers 9 and the latter on wheels 10, the web being out intosheets by cuttercylinders 6 and 10 and delivered inany usual manner. Asthe cutting and delivery devices form no part of my invention, they arenot shown in detail and will not be further described.

11 11 are two lithographic-printing cylinders arranged to make contactwith the periphery of the drum, each consisting, prefer ably, of anouter hollow shell or tube 12,hereinafter spoken of as theprinting-tube, having a cylindrical lithographic surface mounted upon amore substantial but hollow formcylinder 13, thelatter mounted upon ashaft 14: of the press, which shaft will hereinafter be referred to asthe permanent shaft of the form-cylinder. 14? is a typographic cylinderalso arranged to make contact with the periphery of the drum and adaptedto print upon the web advertising or other matter. It is preferablysimilarly constructed of a permanent shaft, form-cylinder, andprinting-tube.

15 15 15 are frames carrying the inkingrollers, including theink-distributing rollers 16 16 16. They and the inking mechanism may beof any ordinary construction,although preferably these frames areconstructed as shown and described in my application for a patent,Serial No. 593,796, filed June 1, 1896, and are adapted to swing outwardout of the way of the printing-cylinder, so as to permit construction,andare operated more easily? .and with greater precision. They consist,

broadly, of arms mounted centrally in the r contact with the surface ofink-distributing rollers 16 in order to spread the ink upon thatcylinder more evenly and smoothly, and thus aid the ink-conveyingrollers 17 17 in their work and cause them to carry and apply the inkmore regularly and evenly 'to the surface of the printing cylinder.These rollers 18 will hereinafter be spoken of as ink-spreading rollers.l9 19 are ink-fountains, 20 20 inkfountain rollers, and 21 21reciprocating inkrollers for conveying ink from the ink-fountain rollersto the ink-distributing rollers. 22 22 are water-fountains, 23 23 thewaterfonntain rollers, and 24 24 reciprocating rollers for conveyingwater from the water-fountain rollers to the water-rollers2525;thelatter conveying it to the printing-cylinder. All

these and other parts of the inking and dampening mechanism may be ofany suitable construction and will not be further described, as, withthe exception of the ink-spreading rollers 18 18, none of them for-m anypart of my invention. 7 V

The number of lithographic cylinders 11 may be varied at will, dependingupon the number of colors to be printed upon the web. By means of myimproved press a plurality of lithographic impressions in differentcolors and an impression from a typographic surface of advertising orother printed matter can be made simultaneously and in the samecontinuous operation upon the sameside'of a continuous web, thuseffecting a great saving in time in the amount and character ofmachinery required and in expense.

Heretofore in presses in which printing cylinders have been arrangedaround the periphery of a larger impression cylinder or drum it has beenusual in removing such:

printing-cylinders.from the press or in placing them in position thereonto move them outward from or inward toward the drum by means of armssecured to overhead supports or supports outside of or surrounding thepress. Such devices occupy considerable space, are more or lesscumbersome, and are clumsy in operation. By my improved devicesprinting-cylinders or form -cylinders and their permanent shafts and theprintingtubes thereon are moved radially outward or inward from ortoward the center of the press by mechanism which lies toward the"center of the press or within the circle of the form-cylinders. Myimproved devices forthis purpose occupy much less room than thoseheretofore in use, are simple and compact in press and adapted to moveradially to engage with the shafts of the printing-cylinders and to movethem radially outward or inward from or toward the center of the pressor the impression-drum to enable the printing-cylinders to be removedfrom the press or to be placed in position therein and suitable meansfor moving said arms radially, such means being preferably driven by thedriving mech-' anism of the press. These devices in their preferred formare as follows:

each printing-cylinder,tube,orform=cylinder, screw-threaded for thegreater part of their 1 length and fitted within 'interiorly-screwthreaded nut-sleeves 27 27. Each nut-sleeve is loosely mounted in abearing 28, carried bya bracket secured to the framework of the press.Each nut-sleeve 27 carries at its lower enda beveled gear-wheel 29,which meshes with a large beveled gear-wheel 30. Nutsleeve 27 can rotatefreely in either direction in bearing '28 and is held in place in thebracket by collar 28 and shoulder 31 and is 'preventedfrom lengthwisemovement in its bearing. Radial arms 26 have at their upper endsbearings 32 32, adapted at the proper time to carry permanent shaft 14,as will be hereinafter described. One. of each set of radial arms haspreferably some locking device for securing the permanent shaft to thesehearings. This may be of any suitable construction. In the drawings itis shown as a cylindrical at its lower end and forked at its upper end,the forks being adapted to take around shaft 14.

116 is a ring which is adapted to slip up and down on arm 33 and belocked to arm 33 by means of tightening-screws 117. When the parts arein position in the press, ring 116 surrounds the upper end of 33 and thelower end of 115 and is clamped to both of them by screws 117 When it isdesired to remove the printing-tube, screws 117 are unscrewed and ring116 slipped'down until it clears the lower end 01 piece 115. The'piece115 can then be slipped to the side and removed. The printing-tube canthen be taken oh. I

Gear-wheels are driven by bevel gearwhee'ls 34 upon shafts 35. Shafts 35carry at their other end bevel gear-wheels 36, which mesh withbevel-gears 37 upon shaft 38. The latter shaft has at one endabevel-gear 39 meshi-ngwith bevel-gear 40 upon shaft 41. The lattershaft maybe turned in any suitable way by hand or by power.

When it is desired to remove a printing cylinder or a printing-tube orform-cylinder i from the press, shaft 4-1 is turned in one direction,thus rotating gear-wheels 30 and nutshafts 27 in one direction. Asnut-shafts 26 26 are radialarms, two for the shaft of locking-arm 33,connected with the radialarm IIO 27 are radially immovable, radial arms26, through the action of the screw-threads, are moved radially outwardfrom the press, bearings 32 are brought into contact with permanentshaft 14 and carry it and the form-cylinder and printing-tube radiallyoutward until the permanent shaft 14 comes into line withreceiving-shaft 42 upon standard 43.

In the above-described mechanism for moving the permanent shafts of theprinting-cylinders outward from or inward toward the center of the pressI have shown as my preferred form a screw and nut engaging with eachother, one part being movable radially and the other stationary andbeing actuated by the driving mechanism of the press. Any suitable meansmay of course be employed for imparting radial motion to the radialarms, and any suitable devices for actuating said means may be employedwithout departing from my broad invention. For example, the screw andnut might be dispensed with, other suitable mechanism for impartingradial motion being substituted in their place, or where a screw and nutare employed for the purpose it is not essential that the screw be themovable member and the nut the immovable one or that the screw be themember connected to the radial arms.

Any suitable devices for removing a printing-cylinder from the radialarms or of placing it thereon or of removing a printing-tube andform-cylinder from the permanent shaft or of placing them thereon may beemployed; but where hollow removable printing-tubes and removableform-supporting cylinders are used I prefer to use a standard forsupporting the printing-tubes or form-cylinders, or both, after theyhave been removed from the permanent shafts of the press or before theyare about to be placed upon them. This standard has a plurality ofreceiving-shafts, preferably one for each printing-cylinder of thepress, each receiving-shaft being mounted in the standard so as to swinghorizontally to bring the shaft into the proper position for removing aprinting-tube or form-cylinder therefrom to a permanent shaft of thepress or for removing a printing-tube or form-cylinder from a permanentshaft of the press to the receiving-shaft. These standards may be fittedwith any number of receiving-shafts, and they may be arranged upon thestandard in any suitable manner to meet the requirements of presseshaving a different number of printing-cylinders or printing-cylindersdifferently arranged. In Fig. 4 I have shown a form of standard adaptedto a press having three printing-cylinders and in Fig. 5 a form ofstandard adapted to a press having six printing-cylinders. In the formof standard shown in Fig. 4 the receiving-shafts are not movablevertically,whereas in the form shown in Fig. 5the preferred formthereceivingshafts, or some of them, are vertically movable to aid in theplacing of printing-tubes or form-cylinders upon the receiving-shafts orin the removing of them therefrom. In the form shown in Fig. 4 thereceiving-shafts are arranged in the arc of a circle, so that when thepermanent shafts are moved outward radially to their limit eachreceivingshaft will register with its corresponding permanent shaft. Inthe form shown in Fig. 5 some of the receiving-shafts are raisedvertically before they can be brought into the proper position toregister with their corresponding permanent shafts of the press, theform of standard shown in Figs. 5 to 10, inclusive, being described atlength fart-her on in this specification.

Referring now to the form shown in Fig. 4, each receiving-shaft issecured in a swinging head 44, connected with standard 43 by aswivel-joint45,so that it can be swungaround. A sliding bolt 46 in theend of receiving-shaft 42 is adapted to take into a hole 47 in the endof the permanent shaft, by means of which the two shafts may be madeinto one composite shaft, whereupon form-cylinder 13 or printing-tube12, or both, can be slipped along the composite shaft, locking-arm 33having first been swung out of the way, until they rest wholly uponreceiving-shaft 42. p The two shafts are then disconnected.Receivingshaft42 and itshead 44 are thenswung around, when theprinting-tube or form-cylinder can be removed therefrom.

When a printing-tube alone is removed, a tube-holder 48, composed of ahollow shaft and of shoulders 49, is first slipped upon receiving-shaft42 and the printing-tube is slipped along from the form-cylinder ontoshoulders 49. In Fig. 3 one of the receivingshafts is shown as carryinga tube-holder, (represented in dotted lines,) while in Fig. 4 it carriesa form-cylinder and printing-tube. Printing cylinders or printing tubesand form-cylinders are placed in position in the press in the same way,the steps being taken, of course, in the reverse order.

Motion is imparted to drum 2 through belt 50, pulley-wheel 51, shaft 52,and pinion 53, meshing with spur-wheel 54 upon shaft 54- A pinion 54upon the other end of shaft 54 meshes with gear 54 upon the inside ofthe drum, thus rotating the latter. Spur-wheel 55 upon drum 2 meshes incog-wheel 56 upon shaft 14, thus rotating printing-cylinder ll.Spurwheel 57, also upon drum 2, meshes with pinion 58, the lattermeshing with cogwheel 59 upon the shaft of ink-distributing roller 16,thus driving the latter roller. The other inking-rollers and mechanismand dampening-rollers and mechanism are driven and operated in any usualmanner, and as such driving mechanism forms no part of my presentinvention it willnot be further described.

My improved devices for causing the various printing-cylinders toapproach and make contact with the drum to effect the lithographic orprinting and to recede therefrom and to take these steps in their properorder and time and also for regulating the pressure tact will now bedescribed.

- cylinders.

In their usual position in the press permanent shafts 14, carrying theform-cylinders and printing-tubes,rest upon bearings in-movable supports60. These supports are carried by rods 61 61, the latter being capableof vertical movement. This motion is imparted to them through aprojection from or a connection of the rods 61 bearing againsteccentrics 62 62, mounted upon the shaft 63. In the drawings thisconnection is shown as a ring 63 pivoted to the lower end of rods 61 61,encircling the eccentrics. Shaft 63 is shown as having at each end threeeccentrics, one for each permanent shaft of the form- Motion is impartedto shaft 63 by the following-described mechanism: A spurwheel 64 onshaft 63 meshes with pinion 65 on shaft 66. This shaft also carriesbevel gear-wheel 67, which meshes with bevel-gear any suitable manner.

68 on shaft 69. The latter shaft is turned in As shaft 63 rotates arms61 rise and fall, and thus, through movable supports and bearings 60 60,raise and lower the permanent shafts and move the printing-tubes into orout of contact with drum 2. By properly arranging the form and positionof the eccentrics these movements of the Various parts can be correctlytimed.

Rods-61 are screw-threaded near their up per ends and carry nuts 7 O, bymeans of which the movable supports and bearings can be adjusted uponrods 61, and the degree of pressure between the printing-tube 12 anddrum 2 can thus be readily and accurately regulated.

ard 43. These swinging heads and their re- The mechanism for moving theinking mechanism into or out of operative position is as follows: I v I71 is a shaft carrying at one end a bevelgear 72. ,This shaft is turnedin any suitable manner, as by hand. Gear 72 meshes .withbevel-gear 73 onshaft 74, the latter shafthavingat its other end bevel-gear 75, whichmeshes with a large bevel gear-wheel 76.

as six in number, and are adapted to be' used and to register with theprinting-cylinders of asix-color-printing press, for example. Eachreceiving-shaft is mounted in a swinging head 44, so as to be capable ofhorizontal movement. Two of the swinging headsthe lower two-are mounteduponsta-fl tionary bases 82 82, firmly secured to standand bearing 90,forming part of cap 88.

ceiving -.shafts are capable of simply one movement-namely, a horizontalswinging motion. The other swinging heads and their receiving-shafts aremounted upon brackets 83, these brackets being adapted to movevertically upon apost 84, secured'to and forming part of standard 43. Asshown, each of the brackets carries two of the swinging heads with theirreceiving-shaftsnamely, one at each end. A Vertical movement is impartedto brackets 83 up and down the post 84 by mechanism presently to bedescribed. By these means the receiving-shafts mounted on the bracketscan be brought down'Yto the same or substantially the same level as thelower receiving-shafts, printing-tubes or form-cylinders can be readilyplaced thereon, and the four receiving shafts can then be raised totheir proper height, the receiving-shafts be twice the speed of themiddle bracket, so that both brackets will bring'the receiving-shafts tothe lowest level at about the same time, or will raise them to theproper height at the same time.

The means for imparting vertical motion to the brackets consists of thefollowing devices: The post 84 is composed of two pieces, each of whichforms part of a hollow cylinder, each piece being securely fastened tothe base of the post and being secured together at the top by cap 88,screw-threaded on its interior and screwed over the upper part of thetwo pieces 84, which are at this point screwthreaded on their exteriors,as shown at 89, Fig. 7, a space 85 being left between the correspondingedges of each piece of post 84 on each side of the post. In the centerof the post runs a screw-threaded shaft 86, mounted in bearings 87,secured to the base-of post 84 91 is a nut encircling shaft 86 inside ofthe two pieces forming post 84 and is free to move upward and downwardupon the screw of shaft 86. Each bracket 83 is provided with a nut'91.Each nut 91 has a ring 192, which encircles post 84 and is connected tothe nut proper, 91, by two arms 93, which project through the openings85. The parts 91, 92,

and 93 may be cast in one pieceior besecurecl together in any suitableway. These parts are secured to brackets83 by bolts 94. When everscrew-threaded shaft .86 is rotated, each nut 91, and with ititscorresponding bracket '83, will be raised or lowered, depending uponthe direction of rotation of shaft 86. I prefer to drive shaft 86through the driving mechanism of the press and preferably throughacontrolling-engine,so that the movement of the brackets can be easilyand accurately controlled. As shown,shaft 86 is driven by means of abeveled gear 95 at its end meshing with a beveled gear-wheel 96 on shaft97, the latter communicating with any suitable source of power,preferably a controlling-engine, such as is shown and described in oneof my earlier applications. As this, however, forms no part of mypresentinvention, the details are not shown and will not be furtherdescribed.

In order to impart a more rapid motion to the upper bracket 83 than thatgiven to the lower bracket, I have given a steeper pitch, as illustratedat 98, to the part of the screw of shaft 86 traversed by the nut of theupper bracket than is given to the screw of the lower part of the shaft,as illustrated at 99, which part of the screw-threaded shaft istraversed by the nut of the lower bracket. By these means I am enabledto lower or raise both brackets in the same time.

In Fig. 8 I have shown my present way of mounting a swinginghead in 'thebrackets or the bases or supports for such swinging heads. 100represents the cylindrical opening in the top of the swinging head,adapted to receive the receiving-shaft 42, which shaft is secured inplace therein in any suitable manner. 101 represents the part of thebracket 83 or the base 82 upon which the swinging head rests and turns.This part 101 is provided on its upper face with circular plate 102,made of hardened steel and secured to part 101 by screws 103. A ring104, preferably of hardened steel, is fastened to the under face of theswinging head by screws 105. This ring projects inward toward part 101under plate 102, thus securing the swinging head in position. By meansof this mechanism the swinging head is free to swing and at the sametime is securely held in place upon its base or support.

If desired, automatic means may be employed for turning off the powerwhich drives shaft 86 when the brackets have reached their upwardposition or their lower position. In Figs. 5, 6, and 7 I haveillustrated the presence of such devices. Thus for the purpose ofautomatically stopping the brackets at their upper limit of motion Iprovide two contact-points 106 and 107, 106 being fastened to althoughinsulated from the upper bracket and being connected by wire 108 with abattery or other source of electricity and contact-point 107 beingsecured to the upper part of post 84 and being connected by wire 109 tothe other pole of the battery or source of electricity, so that whencontact-points 106 and 107 make contact, as they will when the bracketshave reached their upward limit of motion, a circuit will be closedthrough some suitable source of electricity and the power be shutoffwhich drives shaft 97. The mechanism andmanner of thus shutting 0d thepower are not shown in the present application, as they form no part ofmy present invention, having been described in a previous application ofmine. Contact-point 107 is mounted upon a circular ring 110, screwedupon the upper part of post 84. In the same waypower can beautomatically shut off from shaft 86 when the brackets reach theirlowest point by means of contact-point 111, secured to and insulatedfrom the lower bracket, its wire 112 connecting with the battery orsource of electricity and contact-point 113, secured to the base of post84, and its wire 114 connecting with the opposite pole of the battery orsource of electricity.

What I claim as new, and desire to secure by Letters Patent, is

, 1. Thecombinationinapress,ofaprintingcylinder, a shaft upon which itis mounted, arms mounted centrally in the press and adapted to moveradially to engage with the shaft of the printing-cylinder and to movethe latter radially outward to disengage the cylinder from the frame ofthe press to enable the printing-cylinder to be removed from the pressor to be placed in position therein, and means for moving said armsradially, substantially as set forth.

2. The combination in a press, ofa printingcylinder, a shaft upon whichit is mounted, arms mounted centrally in the press and adapted to moveradially to engage with the shaft of the printing-cylinder. and to movethe latter radially outward to disengage the cylinder from the frame ofthe press to enable the printing-cylinder to be removed from the pressor to be placed in position therein, and means for moving said armsradially, and means for removing the printing-cylinder from the arms orof placing it thereon, substantially as set forth.

3. The combination with a form-cylinder and its permanent shaft adaptedto carry a lithographic or printing-tube, of arms mounted radially inthe press adapted when raised or lowered to move the permanent shaft andcylinder radially outward to disengage the cylinder from the frame ofthe press to enable the form-cylinder or a printing-tube mounted thereonto be removed from the press or be placed in position therein, and meansfor radially moving said arms, substantially as set forth.

4. The combination with a form-cylinder and its permanent shaft adaptedto carry a lithographic or printing tube, of arms, mounted radially inthe press, adapted, when raised or lowered, to move the permanent shaftand cylinder radially outward to disengage the cylinder from the frameof the press to enable the form-cylinder or a printing-tube, mountedthereon, to be removed from the press or be placed in position therein,means for radially moving said arms, and means for removing theprinting-tube or form-cylinder from the permanent shaft or of placing itthereon, substantially as set forth.

5, The combinationwith a form-cylinder and its permanent shaft adaptedto carry a lithographic or printing tube, of arms, mounted radially inthe press, adapted, when raised or lowered, to move the permanent shaftand cylinder radially outward from or inward toward the press to enablethe form-cylinder or a printing-tube, mounted thereon, to be removedfrom the press or be placed in position therein, bearings on said armsto receive and hold the permanent shaft of the form-cylinder andlocking-arms, forming one of said bearings, adapted to be moved out ofthe way of the form-cylinder and printingtube to permit of their removalfrom or insertion into the press, and means for radially 7 moving saidarms, substantially as set forth.

6. "The combination with a form-cylinder andits permanent shaft adaptedto carry a lithographic or printing tube, of arms, mounted radially inthe press, adapted, when raised or lowered, to move the permanent shaftand cylinder radially outward from or inward toward the press to enablethe form-cylinder or a printing-tube, mounted thereon, to be removedfrom the press or be placed in position therein, bearings on said armsto receive and hold the permanent shaft of the form-cylinder,locking-arms, forming one of said bearings, adapted to be moved out ofthe wayof the form-cylinder and printing-tube -'.to permit of theirremoval from or insertion in the press, means for radially moving saidarms, a standard having a receiving-shaft, adapted to receive andsupport the formcylinder or printing-tube, and means for connecting saidshaft and the permanent shaft of the form-cylinder so as to form onecontinuous shaft, whereby the printing-tube or form-cylinder may beslipped from one shaft to the other and maybe removed from or placed in,the press, substantially as set forth.

7. The combination with a printing-cylinder and its shaft, of arms,mounted radially in the press,adapted, when raised or lowered, to movethe shaft and cylinder radially outward'from or inward toward the press,screwthreads on said arms, a nut-sleeve surrounding each of said arms,mounted in a sleeve, fixedly secured to the framework of the press, andadapted to freely rotate within said sleeve 'and provided with interiorand its permanent shaft adapted to carry a lithographic or printingtube, of arms, mounted radially in the press, adapted, when raised orlowered, to move the permanent shaft and cylinder radially outward fromor inward toward the press, bearings on said arms to receive and holdthe permanent shaft of the form-cylinder, locking-arms, forming one ofsaid bearings, adapted to swing out of the way of the form-cylinder andprinting-tube to permit of their removal from or insertion into thepress, screw-threads on said arms, a nut-sleeve surrounding each of saidarms, itself mounted in a sleeve fixedly secured to the framework of thepress and adapted to freely rotate within said sleeve and provided withinterior screw-threads, a gear-wheel on each of said nut-sleeves andgearing connecting said gear-wheels with a source of power, whereby,when the power is applied in one direction, the arms will raise thepermanent shaft of the form-cylinder and, when applied in the otherdirection, they will lower it so as to permit the removal from orplacing in the press of the form-cylinder or printing-tube,substantially as set forth.

.9. The combination with a form-cylinder and its permanent shaft adaptedto carry a lithographic or printing tube, of arms, mounted centrally inthe press, adapted, when raised or lowered, to move the permanent shaftand cylinder radially outward from or inward toward the press, bearingson said arms to receive and hold the permanent shaft of theform-cylinder, locking-arms forming one of said bearings adapted toswing out of the way of the form-cylinder and printing-tube to permit oftheir removal from or insertion into the press, screw-threads on saidarms, a nutsleeve surrounding each of said arms, mounted in a sleevefixedly secured to .the framework of the press and adapted to freely r0-tate within said sleeve and provided with interior screw-threads, agear-wheel on each of said nut sleeves, gearing connecting saidgear-wheels with a source of power, whereby, when the power is appliedin one direction,

.the arms will raise the permanent shaft of the form-cylinder, and, whenapplied in the other direction, they will lower it so as to permit theremoval from or placing in, the press, of the form-cylinder orprinting-tube, a standard having a receiving-shaft, adapted to receiveand support the form-cylinder or printing-tube and means for connectingsaid shaft and the permanent shaft of the form-cylinder so as to formone continuous shaft, whereby the printing-tube or form-cylinder may. be

slipped from one shaft to the other and may be removed from or placedin, the press, subst-antially as set forth.

10. In combination with a press having a plurality of printing-cylindersarranged radially around a drum, a standard, swinging the permanentshafts of the printing-cylinders, substantially as set forth.

11. In combination with a press having a plurality of printing-cylindersarranged radially around a drum, a standard, having a plurality ofreceiving-shafts arranged in the arc of a circle and adapted to registerwith the permanent shafts of the printing-cylinders and means forconnecting the receivingshafts with the permanent shafts, whereby theformcylinders or printing-tubes may readily and simultaneously beremoved from or be placed upon, the permanent shafts of theprinting-cylinders, substantially as set forth.

12. The combination in a press of a series of printing-cylinders, shaftsupon which they are mounted, a series of sets of arms mounted centrallyin the press, each set of arms being adapted to move radially to engagewith the shaft of one of the printing-cylinders and to move the latterradially outward from or inward toward the press, to enable theprinting-cylinder to be removed from the press or to be placed inposition therein, and means, actuated by the driving mechanism of thepress, for simultaneously moving the said series of sets of armsradially, substantially as set forth.

13. The combination in a press of a series of printing-cylinders, shaftsupon which they are mounted, a series of sets of arms mounted centrallyin the press, each set of arms being adapted to move radially to engagewith the shaft of one of the printing-cylinders and to move the latterradially outward from or inward toward the press, to enable theprinting-cylinder to be removed from the press or to be placed inposition therein, means, actuated by the driving mechanism of the press,fol-simultaneously moving the said series of sets of arms radially, andmeans for removing the printing-cylinders from the radial arms or ofplacing them thereon, substantially as set forth.

14. In combination with a press having a plurality ofprinting-cylinders, a standard, swinging heads secured to the standardand adapted to swing thereon, and a plurality of receiving-shaftssecured to said swinging heads, and adapted to register with thepermanent shafts of the printing-cylinders and to receive and supportform-cylinders or printing-tubes, whereby the form-cylinders orprinting-tubes may readily and simultaneously be removed from or beplaced upon the permanent shafts of the printing-cylinders,substantially as set forth.

15. In combination with a press having a plurality ofprinting-cylinders, a standard, swinging heads secured to the standardand adapted to swing thereon, a plurality of receiving-shafts secured tosaid swinging heads and adapted to register with the permanent shafts ofthe prin ting-cylinders and to receive and support the fornrcylinders orprintingtubes, and means for connecting the receivin g-shaf ts with thepermanent shafts,whereby the form-cylinders or printing-tubes mayreadily and simultaneously be removed from or be placed upon thepermanent shafts of the printing-cylinders, substantially as set forth.

16. In combination with a press having a plurality ofprinting-cylinders, a standard, swinging heads secured to the standardand adapted to swing horizontally thereon, and to move verticallythereon, and a plurality of receiving-shafts secured to said swingingheads, and adapted to register with the permanent shafts of theprinting-cylinder and to receive and support form-cylinders orprinting-tubes, whereby the form-cylinders or printingtubes may readilyand simultaneously be removed from or be placed upon the permanentshafts of the printing-cylinders, substantially as set forth.

17. In combination with a press having a plurality (ifprinting-cylinders, a standard, brackets secured to the standard andmovable vertically thereon, means for moving the brackets vertically,swinging heads mounted upon the brackets and adapted to swinghorizontally thereon, and a plurality of receiving-shafts, secured tosaid swinging heads, and adapted to receive and support form-cylindersor printing-tubes, whereby the receiving-shafts may be caused toregister with the permanent shafts of the printing cylinders, and theform-cylinders or printingtubes may readily and simultaneously be removed from or be placed upon, the permanent shafts of theprinting-cylinders, substantially as set forth.

18. In combination with a press having a plurality ofprinting-cylinders, a standard, brackets secured to the standard andmovable vertically thereon, means for moving the brackets vertically,swinging heads mounted upon the brackets and adapted to swinghorizontally thereon, a plurality of receivingshafts secured to saidswinging heads and adapted to receive and support form-cylinders orprinting-tubes, and means for connecting the receiving-shafts with thepermanent shafts, whereby the receiving-shafts may be caused to registerwith the permanent shafts of the printing-cylinders, and theformcylinders or printing-tubes may readily and sinttultaneously beremoved from or be placed printing-1 upon, the permanent shafts of thecylinders, substantially as set forth;

plurality of printing-cylinders, a standard, movable brackets secured tothe standard and movable vertically thereon, swinging heads mounted uponthe brackets and adapted to swing horizontally thereon, a plurality ofreceiving-shafts secured to said swinging heads,

and adapted toreceive and support formcylinders or printing-tubes, ascrew-threadedshaft mounted in bearings in the standard and driven bythe driving mechanism of the press, nuts meshing with saidscrew-threaded shaft and secured to the brackets, whereby the bracketswill be moved vertically in one direction or the other as thescrew-threaded shaft rotates in one direction or the other,

and the receiving-shafts may be caused to register with the permanentshafts of the printing-cylinders, substantially as set forth;

20. Incombination with a press having a plurality of printing-cylinders,a-standard, movable brackets secured to the standard and movablevertically thereon, swinging heads mounted upon the brackets and adaptedto swing horizontally thereon, a plurality of receiving-shafts securedto said swinging heads and adapted to receive and support form-cylindersor printing-tubes, a screwthreaded shaft mounted in bearings in the.

standard and driven by the driving mechanism of the press and having itsscrew-threads of difierent pitch upon different parts of the shaft, anut meshing with said screw-threaded shaft andsecured to each bracket,whereby the dilferent brackets will be moved ver: tically at differentrates of speed in one direction or the other as the screw-threaded shaftrotates in one direction or the other, and the receiving-shafts may becaused to register with the permanent shafts of the printing-cylinders,substantially as set forth.

21. In combination with a press having a plurality of printing-cylindersarranged radially around a drum, a standard swinging heads secured tothe standard and adapted to swing thereon, a plurality ofreceivingshafts, secured to said swinging heads and I I adapted toregisterw'ith the -permanent shafts 19, In combination with apresshaving a of the printing-cylinders and to receive and support theform-cylinders or printing-tubes, and means for connecting thereceivingshafts with the permanent shafts, whereby V form-cylinders orprinting-tubes may readily and simultaneously be removed from or beplaced upon, the permanent shafts of the printing-cylinders,substantially as-set' forth.

22. In a press, the combination of a printing-cylinder having aprinting-tube or formc'ylinder'and a' permanent shaft" therefor, astandard, a swinging head secured thereto and adapted to swinghorizontally thereon and to move vertically thereon, means for impartingvertical movement to the swinging head, a receiving-shaft secured to thesaid swinging head, whereby the receiving-shaft may be lowered or raisedand may be swung so as to register with the permanent shaft to movevertically upon said standard, means "for moving the bracket verticallythereon, a

swinging head secured to the bracket and adapted to swing horizontallythereon, a receiving-shaft mounted in the swinging head, whereby thereceiving-shaft may be lowered or raised and may be caused to registerwith the permanent shaft of the printing-cylinder and form-cylinders orprinting-tubes may easily be removed from or be placed upon thepermanentshaft of the printing-cylinder, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWARD HETT.

V .Witnessesr GEO. W. MILLS, J r.,

EDWIN SEGER.

